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Re: Serial port mis-detected?
- To: misc_(_at_)_openbsd_(_dot_)_org
- Subject: Re: Serial port mis-detected?
- From: "Michael S. Keller" <green_(_at_)_null_(_dot_)_net>
- Date: Mon, 3 Apr 2000 14:21:36 -0600
I built a new kernel with the pre-processor variable "notyet"
undefined in pccom.c. The kernel then detected that port as a 16550A,
but still wouldn't run 115.2Kbps reliably.
Until I change the hardware, I'll move the fast serial port back to the
I had intended to re-structure my home firewall thus:
World <-> OpenBSD <-> Linux (w/Squid & Junkbuster & mail handling) <->
But OpenBSD on this little 486DX/33 together with this serial board
apparently won't perform as well as what I had before.
If I move to some ISP connection where I use another Ethernet card, I
may have another go at OpenBSD as a part of my firewall.
On Mon, 03 Apr 2000, Denis A. Doroshenko wrote: >
the problem you descibe is very difficult to happen (according to
source > code of the pccom driver). to be detected as ti16750, uart
should report > about working fifos (i.e. claim it's 16550A) and should
also report about > 64 byte fifos (texas instruments extention). the on
thing which is really > doubtfull for me is line #544: >
bus_space_write_1(iot, ioh, com_lcr, lcr | LCR_DLAB); > i wonder if
DLAB is needed to enable 64 byte fifos! on my 2.5-patched > pccom it
works with _real_ ti16750 with this line commented.
-Michael S. Keller, Amateur Radio Station N5RDV
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